<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!--卡片视图-->
    <el-card>
      <!-- 添加角色按钮区域 -->
      <el-row>
        <el-col>
          <el-button type="primary" @click="addRoleDialogVisible = 'ture'"
            >添加角色</el-button
          >
        </el-col>
      </el-row>
      <!-- 角色列表区域 -->
      <el-table :data="rolesList" border stripe>
        <!-- 展开列 -->
        <el-table-column type="expand">
          <template slot-scope="scope">
            <!-- <pre>{{scope.row}}</pre> -->
            <el-row
              :class="['bdbottom', i1 === 0 ? 'bdtop' : '', 'vcenter']"
              v-for="(item1, i1) in scope.row.children"
              :key="item1.id"
            >
              <!--渲染一级权限-->
              <el-col :span="5">
                <el-tag
                  closable
                  @close="removeRightById(scope.row, item1.id)"
                  >{{ item1.authName }}</el-tag
                >
                <i class="el-icon-caret-right"></i>
              </el-col>
              <!--渲染二级和三级权限-->
              <el-col :span="19">
                <!-- 通过for循环嵌套渲染二级权限 -->
                <el-row
                  :class="[i2 === 0 ? '' : 'bdtop', 'vcenter']"
                  v-for="(item2, i2) in item1.children"
                  :key="item2.id"
                >
                  <el-col :span="6">
                    <el-tag
                      type="success"
                      closable
                      @close="removeRightById(scope.row, item2.id)"
                    >
                      {{ item2.authName }}</el-tag
                    >
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <el-col :span="18">
                    <el-tag
                      type="warning"
                      v-for="item3 in item2.children"
                      :key="item3.id"
                      closable
                      @close="removeRightById(scope.row, item3.id)"
                    >
                      {{ item3.authName }}</el-tag
                    >
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
          </template>
        </el-table-column>
        <!-- 索引列 -->
        <el-table-column type="index"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作">
          <template slot-scope="scope">
            <el-button
              type="primary"
              icon="el-icon-edit"
              @click="showEditRoleDialog(scope.row.id)"
              >编辑</el-button
            >
            <el-button
              type="danger"
              icon="el-icon-delete"
              @click="removeRoleById(scope.row.id)"
              >删除</el-button
            >
            <el-button
              type="warning"
              icon="el-icon-setting"
              @click="showSetRightDialog(scope.row)"
              >分配权限</el-button
            >
          </template>
        </el-table-column>
      </el-table>
    </el-card>
    <!-- 添加角色对话框 -->
    <el-dialog
      title="添加角色"
      :visible.sync="addRoleDialogVisible"
      width="50%"
    >
      <!-- 内容主体区域 -->
      <el-form
        ref="addRoleFormRef"
        :model="addRoleForm"
        label-width="80px"
        :rules="addRoleFormRules"
      >
        <el-form-item label="角色名称" prop="roleName">
          <el-input v-model="addRoleForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述">
          <el-input v-model="addRoleForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addRole">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改角色的对话框 -->
    <el-dialog
      title="修改角色信息"
      :visible.sync="editRoleDialogVisible"
      width="50%"
      @close="editRoleDialogClosed"
    >
      <!-- 内容主体区域 -->
      <el-form
        ref="editRoleFormRef"
        :model="editRoleForm"
        label-width="80px"
        :rules="editRoleFormRules"
      >
        <el-form-item label="角色名称" prop="roleName">
          <el-input v-model="editRoleForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述">
          <el-input v-model="editRoleForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>

      <span slot="footer" class="dialog-footer">
        <el-button @click="editRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editRoleInfo()">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 分配权限的对话框 -->
    <el-dialog
      title="分配权限"
      :visible.sync="setRightDialogVisible"
      width="50%"
      @close="setRightDialogClosed"
    >
      <!-- 树形控件 -->
      <el-tree
        :data="rightsList"
        :props="treeProps"
        default-expand-all
        show-checkbox
        node-key="id"
        :default-checked-keys="defKeys"
        ref="treeRef"
      ></el-tree>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRightDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="allotRights">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>
<script>
export default {
  data() {
    return {
      //角色列表
      rolesList: [],
      //控制分配权限对话框的显示与隐藏
      setRightDialogVisible: false,
      //所有权限的数据
      rightsList: [],
      //树形控件的属性绑定对象
      treeProps: {
        label: "authName",
        children: "children",
      },
      //默认选中的节点id值数组
      defKeys: [],
      //当前即将分配权限的角色id
      roleId: "",
      //控制添加角色对话框的显示与隐藏
      addRoleDialogVisible: false,
      //控制修改角色对话框的显示与隐藏
      editRoleDialogVisible: false,
      //查询到的角色信息对象
      editRoleForm: {},
      //修改表单的验证规则对象
      editRoleFormRules: {
        roleName: [
          { required: true, message: "请输入角色名称", trigger: "blur" },
        ],
      },
      //添加角色表单的验证规则对象
      addRoleFormRules:{
        roleName: [
          { required: true, message: "请输入角色名称", trigger: "blur" },
        ],
      },
      //添加角色的表单数据
      addRoleForm:{
                roleName:'',
                roleDesc:'',
            },
    };
  },
  created() {
    //获取所有角色
    this.getRolesList();
  },
  methods: {
    //获取权限列表
    async getRolesList() {
      const { data: res } = await this.$http.get("roles");
      if (res.meta.status !== 200) {
        return this.$message.error("获取角色列表失败");
      }
      this.rolesList = res.data;
      // console.log(this.rolesList)
    },
    //根据Id删除对应的权限
    async removeRightById(role, rightId) {
      //弹框提示用户是否确认删除
      const confirmResult = await this.$confirm(
        "此操作将永久删除该文件, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        }
      ).catch((err) => err);
      if (confirmResult !== "confirm") {
        return this.$message.info("取消了删除！");
      }
      // console.log('确认了删除')
      const { data: res } = await this.$http.delete(
        `roles/${role.id}/rights/${rightId}`
      );
      if (res.meta.status !== 200) {
        return this.$message.error("删除权限列表失败！");
      }
      // this.getRolesList()不建议重新渲染一次页面
      role.children = res.data;
    },
    //展示分配权限的对话框
    async showSetRightDialog(role) {
      this.roleId = role.id;
      //获取所有权限的数据
      const { data: res } = await this.$http.get("rights/tree");
      if (res.meta.status != 200) {
        return this.$message.error("获取权限数据失败");
      }
      //获取的权限列表的数据保存到data中
      this.rightsList = res.data;
      // console.log(this.rightsList)

      //递归获取三级节点的id
      this.getLeafKeys(role, this.defKeys);

      this.setRightDialogVisible = true;
    },
    //通过递归的形式获取角色下所有三级权限的id,并保存到defKeys数组中
    getLeafKeys(node, arr) {
      //如果当前的node节点不包含children属性，则是三级节点
      if (!node.children) {
        return arr.push(node.id);
      }
      node.children.forEach((item) => {
        this.getLeafKeys(item, arr);
      });
    },
    //监听分配权限对话框的关闭事件
    setRightDialogClosed() {
      this.defKeys = [];
    },
    //点击为角色分配权限
    async allotRights() {
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys(),
      ];
      const idStr = keys.join(",");
      // console.log(keys)
      const { data: res } = await this.$http.post(
        `roles/${this.roleId}/rights`,
        { rids: idStr }
      );
      if (res.meta.status !== 200) {
        this.$message.error("分配权限失败");
      }
      this.$message.success("分配权限成功");
      this.getRolesList();
      this.setRightDialogVisible = false;
    },
    //根据id删除对应的角色信息
    async removeRoleById(id) {
      // console.log(id)
      //弹框询问用户是否删除数据
      const confirmResult = await this.$confirm(
        "此操作将永久删除该角色, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        }
      ).catch((err) => err);
      //如果用户确认删除，则返回值为字符串 confirm
      //如果用户取消了 删除，则返回值为字符串cancelid
      // console.log(confirmResult)
      if (confirmResult !== "confirm") {
        return this.$message.info("已取消删除");
      }
      const { data: res } = await this.$http.delete("roles/" + id);
      if (res.meta.status !== 200) {
        return this.$message.error("删除角色失败");
      }
      this.$message.success("删除角色成功");
      this.getRolesList();
    },
    //展示编辑角色的对话框
    async showEditRoleDialog(id) {
      const { data: res } = await this.$http.get("roles/" + id);
      if (res.meta.status !== 200) {
        return this.$message.error("查询角色信息失败");
      }
      // console.log(res.data)
      this.editRoleForm = res.data;
      console.log(this.editRoleForm);
      this.editRoleDialogVisible = true;
    },
    //监听修改角色对话框的关闭事件
    editRoleDialogClosed() {
      this.$refs.editRoleFormRef.resetFields();
    },
    //点击按钮，修改角色
    editRoleInfo() {
      this.$refs.editRoleFormRef.validate(async (valid) => {
        if (!valid) return;
        //可以发起修改用户的网络请求
        // 'roles/'+parseInt(this.editRoleForm.id
        const { data: res } = await this.$http.put(
          `roles/${this.editRoleForm.roleId}`,
          {
            roleName: this.editRoleForm.roleName,
            roleDesc: this.editRoleForm.roleDesc,
          }
        );
        console.log(res);
        if (res.meta.status !== 200) {
          return this.$message.error("更新角色信息失败");
        }
        //关闭对话框
        this.$message.success("更新角色信息成功");
        //隐藏修改角色的对话框
        this.editRoleDialogVisible = false;
        //重新获取角色列表数据
        this.getRolesList();
      });
    },
    //点击按钮，添加新用户
    addRole(){
            this.$refs.addRoleFormRef.validate(async valid =>{
                // console.log(valid)
                if(!valid) return
                //可以发起添加角色的网络请求
                const {data:res} = await this.$http.post('roles',this.addRoleForm)
                if(res.meta.status !== 201){
                    return this.$message.error(res.meta.msg);
                }
                this.$message.success(res.meta.msg);
                //隐藏添加角色的对话框
                this.addRoleDialogVisible= false
                //重新获取角色列表数据Roles
                this.getRolesList()
            })
        },
  },
};
</script>
<style lang="less" scoped>
.el-tag {
  margin: 7px;
}
.bdtop {
  border-top: 1px solid #eee;
}
.bdbottom {
  border-bottom: 1px solid #eee;
}
.vcenter {
  display: flex;
  align-items: center;
}
</style>